Hello, syzbot found the following issue on: HEAD commit: a5088ee7251e Merge tag 'thermal-6.1-rc1' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=153f2492880000 kernel config: https://syzkaller.appspot.com/x/.config?x=21254cf9c7c084e0 dashboard link: https://syzkaller.appspot.com/bug?extid=2e2f697dbd0f429d5dae compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1556a368880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c2d2c6d22fae/disk-a5088ee7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3c66d2393267/vmlinux-a5088ee7.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/f2050cc3fa6c/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2e2f697dbd0f429d5dae@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff888119526520 (size 32): comm "syz-executor.4", pid 4168, jiffies 4294949450 (age 9.260s) hex dump (first 32 bytes): 6c 6f 6f 70 34 00 00 00 00 00 00 00 00 00 00 00 loop4........... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff814c5b86>] kstrdup+0x36/0x70 mm/util.c:61 [<ffffffff814c5c13>] kstrdup_const+0x53/0x80 mm/util.c:84 [<ffffffff823af0e2>] kvasprintf_const+0xc2/0x110 lib/kasprintf.c:48 [<ffffffff824a442b>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:257 [<ffffffff824a48ad>] kobject_add_varg lib/kobject.c:352 [inline] [<ffffffff824a48ad>] kobject_init_and_add+0x6d/0xc0 lib/kobject.c:441 [<ffffffff81e217ba>] nilfs_sysfs_create_device_group+0x9a/0x3d0 fs/nilfs2/sysfs.c:991 [<ffffffff81e0a03c>] init_nilfs+0x51c/0x680 fs/nilfs2/the_nilfs.c:637 [<ffffffff81df608b>] nilfs_fill_super fs/nilfs2/super.c:1047 [inline] [<ffffffff81df608b>] nilfs_mount+0x51b/0x890 fs/nilfs2/super.c:1317 [<ffffffff8164f4ab>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610 [<ffffffff815e8c48>] vfs_get_tree+0x28/0x100 fs/super.c:1530 [<ffffffff8162cbd7>] do_new_mount fs/namespace.c:3040 [inline] [<ffffffff8162cbd7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370 [<ffffffff8162d7be>] do_mount fs/namespace.c:3383 [inline] [<ffffffff8162d7be>] __do_sys_mount fs/namespace.c:3591 [inline] [<ffffffff8162d7be>] __se_sys_mount fs/namespace.c:3568 [inline] [<ffffffff8162d7be>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568 [<ffffffff845ebbf5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff845ebbf5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
